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Summary of Significant Accounting Policies - Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Change in Valuation Allowance [Roll Forward]
Balance at beginning of the year	$ 65,304	$ 47,664	$ 37,019
Charged to costs and expenses	979	124	2,399
Changes in net loss carryforward and other	13,715	17,516	8,246
Balance at end of the year	$ 79,998	$ 65,304	$ 47,664

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- Definition

Change in Valuation Allowance

+ References

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X

- Definition

Deferred Tax Assets, Valuation Allowance, Charged (Credited) To Costs And Expenses

+ References

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- Definition

Deferred Tax Assets, Valuation Allowance, Other Adjustments

+ References

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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